River Hamble - Mercury Yacht Harbour Rainfall ForecastUnited KingdomSEHampshireRiver Hamble - Mercury Yacht HarbourToday 14 Dec15%Mon 15 Dec55%Tue 16 Dec20%Wed 17 Dec75%Thu 18 Dec80%Fri 19 Dec50%River Hamble - Mercury Yacht Harbour rainfall forecast issued today at 6:36 am. Next forecast at approx. 8:36 pm.1-Day3-Day5-Day Graph Plots Open in Graphs Rainfall Probability Forecast Met Office Rain Today Real-Time Dean Hill (Wiltshire) RadarNational SatelliteNational SynopticGet WillyWeather+ to remove ads